<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%
		if (request.getAttribute("error") != null) {
	%>
	<%=request.getAttribute("error")%>
	<%
		}
	%>
	<br/>
	<a href="four_login.jsp">重新登录</a>
</body>
</html>